Combination oil and gas burner



Sept: 27 1927.

E. sEAvER ETYAL COMBINATION OIL AND GAS BURNER Filed Feb. 1925 INVENTORS E'owara Sea z/er Frank Patented Sept. 27, 1927.

UNITED IEDWAIRDSEAVER, -'OF NEEl-DHAlVf, AND FRANK A) MAZZUR, Q1 EVABAN, MASSACHU- ADM'INIS TRATPEX F SAID FRANK A. MAZZUR DE- CEASED; ASSIGNORS"TO' 'PEABODY".I'ENGINEERING' CORPORATION, NEW YORK, 'Y.,' A'CORPOBATION'OF NEV'YORK. I

coiviiaiimrioiv oin AND GASEZBURNER.

Applicatio'i'iz filed February 6, 1925. 'Seria1 No. ,7,371.

Gui invention-relates to. a combinationloil and burner whereby either gaseous or permit the change in a minimum ofatime,

from one fuel to another as well as the use of both gaseous and liquid combustibles simultaneously during the period of change.

A further object is to provide a means of supplying a coolin medium to the heated parts through the 1 gas: chamber while burning-oil and through the-air register while burning gaseous fuel to prevent:over-heating and distortion of parts.

The foregoingand other features of-our invention will tion with the accompanying drawing, form iiig part of this specification,

in which we have represented our device in its preferred form,

after which we shall point out more particularly .in the claims those features which-we believetobenew and of our ]O111t invention.

Figure lisza sectional view of our device illustrated within a; standard, air register supported Figure.

in .the wall of'a furnace. I 2 is a view of the diffuser end of from the right, it being,

uniform throughout only half of it is shown. In the carrying out of our invention we employ a standard with gun 2 and tip 3. gun 2 we provide a cylindrical 4 comprisin neehanical atomizer 1 Surrounding the gas chamber an inner and outer cylinder joined together at one end and held apart at the other end by the lantern ring spacer 5 V and tip 11. The outer cylinder is supported in the wall 6 of the air register provided with the usual shutters 8 to regulate the air for combustion, peep hole 9, all of whichis common to air registers pose. On the furnace end der of the gas This diffuser used for the purof the inner cylinchamber 4; is the diffuser 10;

is a device which acts as a partial shield to the oil spray, so that the air for combustion will not strike the spray with full force. quired, but

small quantity and with this point is rea gentle velocity.

As shown, the diffuser is formed with a series of openings-as usual, through which ischarged from the gas chamopenings gas d be described in conned;

. iththis simple ber passes into the oil spray and then into. the combustion chamber. A tip or plug 11 is provi led withv a threaded portion 12 adaptedto. screw on the end of the inner cylinder,-and a tapered portion 13 adapted to make tight contact with the outer cylinder of thegas chambers. A pluralityof pipes let are adaptedto screw into holes 15 in the plug 11- andextend radially therefronnconforming approximately to the conical shape of the diffusers in common use. These-pipes are closed at their outer. ends but are providedwith outlet holes 16 on the siderof thepipes next the diffuserxlO. The diffuser is conical inshape and resembles inform the vdiffusers'incommon use with the exception that it has two rings 17 and 18 formed integral therewith, said rings being providedflwith holes 20 through which the pipes l i extend thereby holdinglthe diffuser lO-to the plug ortip 11. The diffuser is providedwithighe openings 34: alternating with the ribs 35,-..whichin combination serve to diffuse the air and admit it in proper amount to the oil burner. A certain number of the openings preferably every other one, as indicated in. tigure2,. are provided with extensions '36 toward the axis of the oilburner andthe, gas pipes 14 are so arranged as. to discharge gas through the extended openings; 36 and correspondingopeningsidf assembly the conical dif-, fuser plate 10 is joined to the plug 11 by 7 means of'the pipes lt thereby forming a diffuser which is connected to the gas chamher 4 and provided with outlet for gas through the holes 16. It practically presents a hollow diffuser which may be used as a gas burner. Near the closed end of the gas chambers away from thefurnace, we provide a'plu- 'rality of holes or. openings which coinmunicate to the inside of a fitting S1 surrounding the gas chamber d. This fitting is provided with a plug 32 which may be removed when gas is not used to provide means for delivering air to the diffuser and a threaded portion 33-for attaching a flexible gas hose or other pipe to any gas supply. It will be apparent from the foregoing description that when the gas supply is shut off, the plug 32 can be removed connecting the gas chamber 42 with the, air

.oil burner that both gas and liquid combustibles may be burned during a period of change, the mechanical atomizer Will in that event deliver a spray inside the combustion chamber, that air for properand efficient combustion will be delivered through the air register, and that gas Will. be delivered into said'spray through the diffuser.

l/Ve Wish lb distinctly understood that our combination gas and oil burner herein described and illustrated is in the form in Which We desire to construct it and that changes or variations may be made as may be convenient or desirable Without. departing from the salient features of our inven-- tion and We therefore intend the following claims to cover such modifications asnaturally fall Within the lines of invention.

1. Fuel burning apparatus for furnaces comprising a liquid fuel atomizer, a diffuser surrounding said atomizer and having openings therein, a chamber supported in proximity to said diffuser and having outlets in the Wall thereof adapted to discharge a gaseous fuel through the openings in the diffuser, and a connection to, said chamber for supplying a gaseous fuel thereto.

2. Fuel burning apparatus for furnaces comprising a liquid fuel atomizer, a diffuser surrounding said atomizer and having openings therein, a chamber supported in proximity to said diffuser and having outlets in the Wall thereof adapted to discharge a gaseous fuel through the openings in the diffuser, a connection to said chamber for supplying a gaseous fuel thereto, and means for admitting air to said vchamber When the gas supply is cut .off. i

'8. Fuel burning apparatus for furnaces comprising a liquid fuel atomizer, a gas chamber surrounding the atomizer supply pipe, said chamber having outlets in the."

Wall thereof for the gas, and a diffuser supported on the furnace side of the gas chamber, said extensions having gas discharge outlets, and a diffuser supported on the furnace side of said extensions and havmg opemngs therein for the passage ofgas discharged through the outlets'inthe said extensions.

6. Fuel burning apparatusfor furnaces comprising a liquid fuel atomizer, a gas chamber surrounding the atomizer supply pipe and having extensions therefrom surrounding the atomizer and having discharge outlets for the gas, and a conical shaped diffuser having openings therein and supported upon said gas chamber on the furnace side of said extensions. I l In testimony whereof We affix our signature's. I a 5 ED'WARD SEAVER. FRANK A. MAZZUR, 

